regex101: JavaScript Match Workspace

^start of line

Group 1((http|https):\/\/)?

?repeats the group contents below at most once:

Group 2(http|https)

1st Alternativehttp

httpthe literal text http (case sensitive)

2nd Alternativehttps

httpsthe literal text https (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3([a-zA-Z0-9_][-_a-zA-Z0-9]{0,62}\.)+

+repeats the group contents below at least once:

Character Class[a-zA-Z0-9_]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[-_a-zA-Z0-9]{0,62}

{0,62}matches between 0 and 62 characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 4([a-zA-Z0-9]{1,10})

Character Class[a-zA-Z0-9]{1,10}

{1,10}matches between 1 and 10 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

26 tokens

Regular Expression

^((http|https):\/\/)?([a-zA-Z0-9_][-_a-zA-Z0-9]{0,62}\.)+([a-zA-Z0-9]{1,10})$

New

xor
xor.com
ww2.xor.co
www.xor.com
val-id.com
-invalid.com
http://xor.com
https://xour.cu
www.http://r.com
https://ww2.xour.cu
s2._domainkey.lixtil.com.au
3426127.group27-.hsbspot.co
hs2._domainkey.lixtil.com.au
3426127.grou p27-.hu3spot.co
little_com_au.xor.tinzy.330.net
3426127.group27.sites.hubseot.net
littil-com-au.hs01a.dkim.hubspoteeail.net
sg2.v8143875.c308460036.e.marketingfutomation.services